#define _CRT_SECURE_NO_WARNINGS
#pragma warning(disable:6031)

#include <stdio.h>
#include <string.h>

int main()
{
	char str1[100] = "zhao";
	char str2[100] = "xxxxxxxxxxxxxxxxxxxx";
	//strcat(str1, str1);
	strcpy(str2, str1);
	printf("%s", str2);

	return 0;
}